A. all living things are made out of cells b. cells are the smallest unit of life c. all cells have a nucleus and chloroplasts d. all cells come from other cells. which of the above statements is not part of the cell theory? how do you know?

cells are not the smallest unit of life because atoms are smaller than cells

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands